EP0387865B1 - Dispositif de protection contre des étincelles pour conducteurs isolés, en particulier pour lignes aériennes - Google Patents

Dispositif de protection contre des étincelles pour conducteurs isolés, en particulier pour lignes aériennes Download PDF

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Publication number
EP0387865B1
EP0387865B1 EP90104869A EP90104869A EP0387865B1 EP 0387865 B1 EP0387865 B1 EP 0387865B1 EP 90104869 A EP90104869 A EP 90104869A EP 90104869 A EP90104869 A EP 90104869A EP 0387865 B1 EP0387865 B1 EP 0387865B1
Authority
EP
European Patent Office
Prior art keywords
spark
conductor
protection device
jaws
horn
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP90104869A
Other languages
German (de)
English (en)
Other versions
EP0387865A1 (fr
Inventor
Turunen Harri
Teirikangas Hannu
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sekko Oy AB
Original Assignee
Sekko Oy AB
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sekko Oy AB filed Critical Sekko Oy AB
Priority to AT9090104869T priority Critical patent/ATE105655T1/de
Publication of EP0387865A1 publication Critical patent/EP0387865A1/fr
Application granted granted Critical
Publication of EP0387865B1 publication Critical patent/EP0387865B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G7/00—Overhead installations of electric lines or cables
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01T—SPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES
    • H01T4/00—Overvoltage arresters using spark gaps
    • H01T4/10—Overvoltage arresters using spark gaps having a single gap or a plurality of gaps in parallel
    • H01T4/14—Arcing horns
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/24—Connections using contact members penetrating or cutting insulation or cable strands
    • H01R4/2404—Connections using contact members penetrating or cutting insulation or cable strands the contact members having teeth, prongs, pins or needles penetrating the insulation
    • H01R4/2408—Connections using contact members penetrating or cutting insulation or cable strands the contact members having teeth, prongs, pins or needles penetrating the insulation actuated by clamping screws
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R11/00—Individual connecting elements providing two or more spaced connecting locations for conductive members which are, or may be, thereby interconnected, e.g. end pieces for wires or cables supported by the wire or cable and having means for facilitating electrical connection to some other wire, terminal, or conductive member, blocks of binding posts
    • H01R11/11—End pieces or tapping pieces for wires, supported by the wire and for facilitating electrical connection to some other wire, terminal or conductive member
    • H01R11/12—End pieces terminating in an eye, hook, or fork
    • H01R11/14—End pieces terminating in an eye, hook, or fork the hook being adapted for hanging on overhead or other suspended lines, e.g. hot line clamp
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/28—Clamped connections, spring connections
    • H01R4/38—Clamped connections, spring connections utilising a clamping member acted on by screw or nut
    • H01R4/44—Clamping areas on both sides of screw

Definitions

  • the present invention relates to a spark protection device for lines provided with an insulating layer, in particular overhead lines, as specified in the preamble of patent claim 1.
  • a medium-high tension conductor system is easily susceptible to falling trees, loads of ice and snow and climatic surges.
  • OESI conductors for medium voltage ranges, eg 20 kV. These lines enable short phase intervals compared to open, non-insulated cables, and thus a higher energy density. Insulated cables also allow shorter distances to buildings, trees and the like. This leads to tighter cable networks and therefore also to more economical constructions.
  • Spark protection of overhead lines must be carried out where the breakage of a line can have serious consequences for the environment and the population, e.g. in residential areas, at intersections and the like. Furthermore, spark protection must be provided where overvoltages occur.
  • spark arresters are installed at one or both ends of a portion of each conductor that is stripped of insulation at a line attachment point.
  • the spark protection provides that the line is grounded at the critical end point of an electrical sparkover, so that the spark is directed to the spark protection device and does not appear on the conductor. Every time the insulation is removed from the conductor (during installation or contact connection work, temporary grounding, etc.), the transition point between the bare and the insulated wire must be provided with spark protection.
  • the size of the spark protection must be selected according to the short-circuit current of the power network (part of the mains power supply).
  • the hard and thick PEX insulation must be removed during the installation of conventional spark protection.
  • the insulation must be used when attaching the conductor, e.g. on the post insulator, be removed over a long distance. This must be done for all connections and crossing points, which is a difficult and time-consuming measure, especially in cold weather.
  • areas with severe corrosion damage e.g. Climatic conditions, such as in coastal areas, or as a result of industrial fumes, the removal of the insulation from the wire means that the conductor is exposed to increased corrosion.
  • a further insulated wire is provided as a lightning arrester, which is galvanically separated from the conductors to be connected to one another and has a bare conductor piece which has been stripped of its insulation and which is opposite a bare conductor section of the conductors to be connected which is also freed of its insulation, and thus a spark gap for discharge of sudden surges.
  • a lightning arrester device with spark gap for two-wire strands is known, such as are used for antenna feed lines.
  • Each wire of the strand is pressed against an insulating body by an electrically conductive clamping plate with piercing contact points.
  • the clamping plate is connected to earth via the spark gap in the lightning arrester device.
  • spark protection devices 1 show two spark protection devices, designated as a whole by 1, which are attached to a conductor to be protected which is coated with insulation. This conductor is fastened to a support insulator 20 with a binding wire, which in turn is held by a support arm 4.
  • the spark protection devices 1 are connected to one another by an aluminum lead wire 3.
  • Spark arrester horns 2 protrude obliquely downward from the conductor to be protected. For example, an electrical spark generated by a lightning-induced overvoltage discharges from the tip of the deflecting horn 2 to the support arm 4 or between the areas from the tip of one horn to the tip of the other horn. If the conductor only carries current in one direction, spark protection devices 1 are only required on that side of the post insulator 20 which is located downstream of the post insulator in the direction of the power supply.
  • a base part 5 and a cover part 6 are connected to one another by two clamping screws 15, both parts being pressed against one another by means of the screws.
  • the base part 5 is equipped with a jaw 7 and the cover part 6 with a counter jaw 8.
  • a conductor to be protected can be pressed between the jaws 7 and 8.
  • the jaw 7 and counter jaw 8 are equipped with teeth 9 and 10, the length of which is matched to the thickness of the insulation of the conductor to be protected .
  • the same result can also be achieved in that only one of the jaws is provided with teeth.
  • Bottom part 5 and cover part 6 are provided on the other, one side of the axial plane of the clamping screws 15 with jaws 11 and 12.
  • an intermediate jaw 13 is arranged, which is biased by means of a spring 14 against the jaw 11 of the bottom part 5.
  • a spark discharge horn 2 is arranged between the jaw 11 of the base part 5 and the intermediate jaw 13, this being brought into position and held in it without falling out, even if the clamping screws 15 are not tightened and the cover part 6 is in its uppermost position, as shown in Fig. 2.
  • a third pair of jaws is provided, between which a spark arrester wire 3 can be fixed.
  • the spark arrester horn 2 is kinked at 16 at an angle of approximately 45 °. This angle can vary in the range between 30 ° - 90 °.
  • the length of the deflection horn 2 after the bend 16 in the current direction is to be dimensioned such that short-circuit currents due to arcing due to overvoltage can be intercepted during the service life of the wire, the length being at least 80 mm, preferably at least 180 mm.
  • the spark arrester horn 2 can be provided with a large number of kinks. It is important that the point of the initial discharge can be controlled so that it is at the tip of the spark arrester horn 2, which is far enough from the spark protection itself and the conductor to be protected, so that the electrical sparkover does not damage the conductor.
  • the construction of the spark protection device with the spark arrester is to be dimensioned so that the occurrence of electrical sparks caused by ignition, lightning can be intercepted for the service life or lifespan of the wire.
  • a spark protection device can also be used for a temporary earth fault on a conductor, the spark arrester 2 serving as a connection to a ground electrode. So it is in this too If not necessary, laboriously remove the insulation to create a grounding point. There is also no risk of corrosion of the wire because the wire insulation has not been removed.
  • the grooves between the teeth 9 and 10 of the jaws 7 and 8 can be lubricated by using plenty of grease so that the moisture does not reach the conductor.
  • the spark protection device can also be accommodated in a separate protective housing.
  • a spark protection device simplifies the installation work and can be set up effortlessly and without expenditure.
  • the spark protection device provides protection against arcing over a conductor provided with hard PEX insulation, whereby the installation of this device can be carried out with normal tools.

Landscapes

  • Insulators (AREA)
  • Suspension Of Electric Lines Or Cables (AREA)
  • Emergency Protection Circuit Devices (AREA)
  • Magnetic Heads (AREA)
  • Insulating Bodies (AREA)
  • Vending Machines For Individual Products (AREA)
  • Insulated Conductors (AREA)
  • Push-Button Switches (AREA)
  • Polysaccharides And Polysaccharide Derivatives (AREA)
  • Luminescent Compositions (AREA)
  • Semiconductor Lasers (AREA)
  • Amplifiers (AREA)
  • Oscillators With Electromechanical Resonators (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)

Claims (7)

  1. Dispositif pare-étincelles pour lignes munies d'une couche isolante, en particulier des lignes aériennes, comportant une partie fond (5) et une partie couvercle (6), ces deux parties pouvant être serrées mutuellement par au moins un élément de serrage (15) et munies d'une paire de mâchoires (7, 8) lesquelles reçoivent, entre la partie fond (5) et la partie couvercle (6), une ligne à protéger, et comportant un élément (2) dérivateur d'étincelles distinct, caractérisé en ce que, au moins, une mâchoire (7, 8) est munie de dents (9, 10) dont la longueur correspond, au moins, à l'épaisseur de la couche isolante de la ligne à protéger, en ce que, comme élément dérivateur d'étincelles, est prévue une corne (2) de dérivation d'étincelles laquelle est serrée, au moyen de l'élément de serrage (15), sur la partie fond (5) et/ou sur la partie couvercle (6), en ce que, en outre, l'élément de serrage (15) presse les dents (9, 10) de la mâchoire (7, 8) à travers la couche isolante du conducteur à protéger afin d'obtenir un contact électrique entre ce conducteur à protéger et le dispositif pare-étincelles, et en ce que la corne (2) dérivatrice d'étincelles est placée à une distance suffisamment grande du conducteur à protéger pour écarter l'étincelle électrique du conducteur.
  2. Dispositif pare-étincelles selon la revendication 1, caractérisé en ce que la partie fond (5) et la partie couvercle (6) sont munies d'une deuxième paire de mâchoires (11, 12) entre lesquelles est disposée la corne (2) de dérivation d'étincelles.
  3. Dispositif pare-étincelles selon la revendication 1 ou 2, caractérisé en ce que, entre la deuxième paire de mâchoires (11, 12) se trouve une mâchoire intermédiaire (13) qui est serrée sous une tension initiale contre la mâchoire (11) à l'aide d'un ressort (14), et en ce que la corne (2) de dérivation d'étincelles est disposée entre ladite mâchoire (11) de la partie fond (5) et la mâchoire intermédiaire (13).
  4. Dispositif pare-étincelles selon l'une des revendications précédentes, caractérisé en ce que la mâchoire intermédiaire (13) et la mâchoire (12) de la partie couvercle (6) forment une troisième paire de mâchoires entre lesquelles est maintenu un fil (3) conducteur d'étincelles.
  5. Dispositif pare-étincelles selon l'une des revendications précédentes, caractérisé en ce que la corne (2) de dérivation d'étincelles présente au moins un coude (16) dont l'angle se situe entre 30 et 90°, la longueur libre de la corne de dérivation, entre le coude (16) et la pointe, étant égale à au moins 80 mm, de préférence à 180 mm.
  6. Dispositif pare-étincelles selon l'une des revendications précédentes, caractérisé en ce que la partie fond (5) et la partie couvercle (6) sont munies d'une deuxième paire de mâchoires (11, 12) qui reçoivent un fil (3) conducteur d'étincelles et, en ce que l'élément de serrage (15) se trouvant entre les mâchoires comprime, les unes contre les autres, les deux paires de mâchoires.
  7. Dispositif pare-étincelles selon l'une des revendications précédentes, caractérisé en ce que la corne (2) de dérivation d'étincelles est munie d'un ou de plusieurs coudes (16) et est reliée à la partie fond (5) et/ou à la partie couvercle (6) de telle sorte que l'extrémité extérieure de ladite corne présente une distance maximale par rapport au conducteur.
EP90104869A 1989-03-17 1990-03-15 Dispositif de protection contre des étincelles pour conducteurs isolés, en particulier pour lignes aériennes Expired - Lifetime EP0387865B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT9090104869T ATE105655T1 (de) 1989-03-17 1990-03-15 Funkenschutzeinrichtung fuer isolierte leitungen, insbesondere freileitungen.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI891267A FI80169C (fi) 1989-03-17 1989-03-17 Ljusbaogsskydd som verkar genom ledningsisoleringen.
FI891267 1989-03-17

Publications (2)

Publication Number Publication Date
EP0387865A1 EP0387865A1 (fr) 1990-09-19
EP0387865B1 true EP0387865B1 (fr) 1994-05-11

Family

ID=8528077

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90104869A Expired - Lifetime EP0387865B1 (fr) 1989-03-17 1990-03-15 Dispositif de protection contre des étincelles pour conducteurs isolés, en particulier pour lignes aériennes

Country Status (10)

Country Link
EP (1) EP0387865B1 (fr)
JP (1) JP2905222B2 (fr)
KR (1) KR940000094B1 (fr)
CN (1) CN1020527C (fr)
AT (1) ATE105655T1 (fr)
AU (1) AU629555B2 (fr)
DE (1) DE59005660D1 (fr)
ES (1) ES2055817T3 (fr)
FI (1) FI80169C (fr)
NO (1) NO173968C (fr)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI96648B (fi) * 1995-04-24 1996-04-15 Sekko Ab Oy Valokaarisuoja päällystettyjä keskijännitejohtoja varten
AT1044U1 (de) * 1995-10-30 1996-09-25 Mosdorfer Gmbh Funkenschutzeinrichtung
FI99060C (fi) 1996-01-03 1997-09-25 Sekko Ab Oy Päällystettyjen ilmajohtojen valokaarisuoja
GB2315166A (en) * 1996-07-06 1998-01-21 Ccl Systems Ltd Arc protection clamping connector
FI101913B1 (fi) * 1997-04-07 1998-09-15 Sekko Ab Oy Jännitteelliseen tai jännitteettömään työskentelyyn soveltuva liitin, erityisesti valokaari- tai ylivirtasuojan liitin
FI121692B (fi) * 2009-07-27 2011-02-28 Ensto Finland Oy Päällystettyjen ilmajohtojen liitin
FI121691B (fi) * 2009-07-27 2011-02-28 Ensto Finland Oy Päällystettyjen ilmajohtojen liitin
CN104307613B (zh) * 2014-11-06 2016-10-05 机械工业第六设计研究院有限公司 用于树脂砂轮冷储料的破碎筛分一体化输送装置
CN105375136A (zh) * 2015-10-28 2016-03-02 国家电网公司 电力电缆用快速连接器
WO2017189436A1 (fr) * 2016-04-25 2017-11-02 Te Connectivity Corporation Appareil pour fournir un déflecteur d'arc pour des conducteurs aériens recouverts, et ensembles et procédés associés
RU168539U1 (ru) * 2016-08-04 2017-02-08 Алексей Александрович Остапенко Птицезащитное устройство
CN106760881B (zh) * 2016-12-26 2018-11-02 国网山东省电力公司烟台供电公司 一种电力杆塔
CN108538524B (zh) * 2018-04-18 2024-04-30 广东电网有限责任公司 一种变压器中性点避雷器试验用电极绝缘装置
RU191070U1 (ru) * 2019-02-18 2019-07-23 Сергей Геннадьевич Тетнев Защитный кожух штыревых изоляторов линий электропередачи
RU191071U1 (ru) * 2019-02-18 2019-07-23 Сергей Геннадьевич Тетнев Кожух для защиты штыревых изоляторов линий электропередачи
RU193763U1 (ru) * 2019-06-03 2019-11-14 Сергей Геннадьевич Тетнев Птицезащитное устройство для подвесного изолятора линий электропередачи

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1513193A (en) * 1923-04-10 1924-10-28 Staton Harry Combined cable clamp and lightning arrester
US1914394A (en) * 1928-08-23 1933-06-20 Ohio Brass Co High potential transmission installation
US2560136A (en) * 1948-05-21 1951-07-10 Ericsson Telefon Ab L M Surge arrester for air lines
US2777096A (en) * 1953-07-24 1957-01-08 Allied Electric Products Inc Lightning arrester
SE332848B (fr) * 1968-05-17 1971-02-22 Ericsson Telefon Ab L M
NO791192L (no) * 1979-04-09 1980-10-10 Pfisterer Elektrotech Karl Fullisolert klemme for isolerte ledere.
FR2585192A1 (fr) * 1985-07-18 1987-01-23 Auxiliaire Appar Electric Connecteur electrique destine a realiser une derivation electrique a partir d'un cable electrique forme d'un conducteur entoure d'une gaine isolante

Also Published As

Publication number Publication date
JPH02273020A (ja) 1990-11-07
DE59005660D1 (de) 1994-06-16
FI891267A0 (fi) 1989-03-17
AU629555B2 (en) 1992-10-08
EP0387865A1 (fr) 1990-09-19
NO173968B (no) 1993-11-15
JP2905222B2 (ja) 1999-06-14
FI80169B (fi) 1989-12-29
ATE105655T1 (de) 1994-05-15
NO892527D0 (no) 1989-06-19
CN1020527C (zh) 1993-05-05
ES2055817T3 (es) 1994-09-01
KR940000094B1 (ko) 1994-01-05
FI80169C (fi) 1990-04-10
NO173968C (no) 1994-02-23
KR900015403A (ko) 1990-10-26
AU3710989A (en) 1990-09-27
NO892527L (no) 1990-09-18
CN1045664A (zh) 1990-09-26

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